Hot-water boiler



sept. -27, 1949. D. VNDAL 2,482,992

` HOT WATER BOILER Filed March 5, 1947 Patented Sept. 21, 1949 '2 claims. (c1. 12e-isn The present invention pertains to a novel 'boiler Vfor high or low pressure water 'or steam heating systems.

The principal object of the inventionis to :provide an economical and efcient boilerl adapted to be heated by an oil burner although any kind of combustible lcan be used. In the `matter of simplicity and economy, the boiler consists of comparativelyfew and simple parts. 1' Ijhe. shell is vsub'stantially T-shaped, having vertical 4section andma superimposedhorizontalsection, although these `sections may be integral. Within thel vertical section is an inner wall member forming the water vspace in conjunction with sealed plates in the horizontal section for .supporting the tubes., y n

The tubes are in two fseries. One series extends from the top of the inner wallmember horizontally to the supporting plates at the ends of the horizontal section. The .other Yseries eX- tends from the supporting plates upwardly to a supporting member mounted within a dome formed on the horizontal section. The latter series of tubes is preferably set at an angle to retard the flow of gas and thereby maintain it longer in heating relation to the water. The gases are discharged through a flue connected to the dome. The ends of the horizontal section are preferably closed by detachable plates that may be removed easily for cleaning the tubes.

The invention further includes a water heating tube for the running supply of water. The tube is mounted in the water space, preferably between the inner wall section and the dome. The assembly at the furnace wall for the water connections to the tube is of a unique design, as will hereinafter appear.

The invention is fully disclosed by way of eX- ample by the following description and the accompanying drawings, in which:

Figure 1 is a vertical section of the boiler;

Figure 2 is a top plan View, partly in section;

Figure 3 is an enlarged detail of Figure 1;

Figure 4 is a detail vertical section showing the circulating hot water tube and the coupling therefor, and

Figure 5 is a vertical elevation of the furnace, partly in section.

Reference to these views will now be made by use of like characters that are employed to designate corresponding parts throughout.

The shell of the boiler, as illustrated in Figure 1, is substantially T-shaped, comprising a vertical section I with a horizontal cylindrical portion 2 mounted thereon. The top of this lportion isshaped asia dome `3 for a purpose that will presently be described.

Within the section I is mounted another cylindrical member 4 with a closed top T5, concentric with and spaced from the 'member I to form a water space '6 and extending to approximately the horizontal center 'of the member 2. l

Within lthe member 2 and near vthe endsthereof kare mounted retaining plates lfsealed at 8 'to the from 'the "zrve'mberl'ann having their outer yends supported respectively in the plates l.

V'1n 'the dome '3 is mounted a V-'shaped retaining plate l0. 'A series of tubes IIy extend from the plates I respectively to the 'sides of the member "III, 'with their Vends supportedin these parts 'as shown in Figure l'. The space de'nd by the plates 'l 'and l0 and 'the cylindrical rn'einbersr `I and 4 forms the water space of the boiler. Access thereto is had, for the circulation of water, at couplings I2 at the top of the member 2 and the sides of the dome 3.

A line I3 extends to the water space near the base of the boiler for the supply of cold water or to serve as a return line. At the base is also provided a horizontal tube I4 extending from the vertical wall 4 through the vertical wall I to accommodate connections to an oil burner (not shown) mounted in the member 4.

The ends of the horizontal section 2 are closed by detachable plates shown in detail in Figure 3. Each such plate comprises inner and outer steel discs I5 secured to opposite sides of an asbestos filler I6 by bolts I1. The assembled plates are attached to the member 2 by suitable fastening devices such as bolts I8 so that they may readily be removed for cleaning the tubes 9 and I I. v

The dome 3 is in communication with a ue I9 as shown in Figure 5. The hot gases generated within the section 4 thus follow the path indicated by the arrows in Figure 1. They enter the tubes 9 at the inner ends thereof, and flow to the spaces 20 between the cover plates and the supporting plates 1. From here they enter the lower ends of the tubes l I and flow to the space 2| formed by the V-shaped plate I0 and the top of the dome 3, from which they pass to the flue I9. In following this course, particularly through the vent tubes Il, the gases are somewhat retarded and thereby caused to deliver a correspondingly greater amount of their heat to 3 the water in the water space. In leaving the space 2l, these gases are considerably cooler than the exhaust gases discharged by boilers of conventional design. This is an indication of the greater efliciency of the boiler herein described.

The boiler is also equipped with a heating tube, illustrated in Figure 4, for supplying hot Water to taps and faucets in the building. The side of the member 2 is formed with an opening 22 above the top 5 of the member 4. This opening is covered by a plate 23 having a web 24. The tube 25, mounted in the Water space and above the member 5 forms a double S and has its ends set in the plate 23 at opposite sides of the web 24, Over the plate 23 is mounted a header 26 engaging the web 24 and thus forming two separate compartments 27 and 28 sealed from one another. A cold water pipe 2e communicates with the space 28, and a hot water pipe 3) with the space 27. Thus, water admitted by the pipe 29 ows through the tube 25 before reaching the outlet pipe 30, and is heated by the hot water in the Water space of the boiler.

Although a specific embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details .of construction may be made without departing from the scope of the invention, as indicated by the appended claims.

What I claim as my invention is:

l. A boiler comprising a vertical shell section and a horizontal shell section mounted thereon and in communication therewith, said horizontal section being formed with a dome having an upwardly converging lateral wall, an inner wall section mounted within said Vertical section and extending into said horizontal section and spaced from said vertical section to form a Water space, supporting plates at the ends of said horizontal section, tubes extending horizontally from said inner section to said plates, a supporting member in said dome, another series of tubes extending horizontally from said plates, the latter tubes being bent upwardly in parallel relation to the lateral wall of said dome and extending into said supporting member, and a flue connected to said dome at said supporting member.

2. A boiler comprising a vertical shell section and a horizontal shell section mounted thereon and in communication therewith, said horizontal section being formed with a dome having an upwardly converging lateral wall, an inner wall vsection mounted within said vertical section and I extending into said horizontal section and spaced REFERENCES CITED The following references are of record in the ile of this patent:

UNITED STATES PATENTS Number Name Date 645,507 Humphrey Mar. 13, 1900 883,095 Del Mar Mar. 24, 1908 FOREIGN PATENTS Number Country Date 10,540 Great Britain June 29, 1889 Great Britain Apr. 5, 1909 

